What is the maximum percentage of harmful substances allowed in coarse aggregate according to Table 7? I - The maximum percentage of harmful subst...
What is the maximum percentage of harmful substances allowed in coarse aggregate according to Table 7?
I - The maximum percentage of harmful substances allowed in coarse aggregate for apparent concrete is 1%.
II - The maximum percentage of harmful substances allowed in coarse aggregate for concrete subject to superficial wear is 2%.
III - The maximum percentage of harmful substances allowed in coarse aggregate for other concretes is 3%.
a) Only I is correct.
b) Only II is correct.
c) Only III is correct.
d) I and II are correct.
e) I, II, and III are correct.
I - The maximum percentage of harmful substances allowed in coarse aggregate for apparent concrete is 1%.
II - The maximum percentage of harmful substances allowed in coarse aggregate for concrete subject to superficial wear is 2%.
III - The maximum percentage of harmful substances allowed in coarse aggregate for other concretes is 3%.
a) Only I is correct.
b) Only II is correct.
c) Only III is correct.
d) I and II are correct.
e) I, II, and III are correct.
💡 1 Resposta
Ed 
De acordo com a descrição da pergunta, a alternativa correta é a letra E) I, II e III estão corretas. A tabela 7 estabelece que o teor máximo de substâncias nocivas permitido no agregado graúdo é de 1% para concreto aparente, 2% para concreto sujeito a desgaste superficial e 3% para outros tipos de concreto.
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